<p>The objective is to enable forming of an acoustic wave device comprised of a plurality of piezoelectric thin-film resonators for which each has a different resonant frequency within the same chip and to obtain superior properties in which spurs are reduced without using an expensive device. A frequency control film (51) is provided with a plurality of convex-shaped striped patterns (151) or a plurality of hole patterns. The striped patterns (151) are arranged between each of the resonators so as to have a common spurious adjustment pitch and to have different areas. The hole patterns are arranged between each of the resonators so as to have a common spurious adjustment pitch and to have different opening areas.</p>
